CardTransceiver.Transceive Method

Definition

Namespace:

Iot.Device.Card

Assembly:

Iot.Device.Bindings.dll

Package:

Iot.Device.Bindings v3.0.0

Overloads

Transceive(Byte, ReadOnlySpan<Byte>, Span<Byte>, NfcProtocol)

This function has to be implemented by all NFC/RFID/Card readers. This function is used in exchange of data with the reader and the cards.

Transceive(Byte, ReadOnlySpan<Byte>, Span<Byte>, NfcProtocol)

This function has to be implemented by all NFC/RFID/Card readers. This function is used in exchange of data with the reader and the cards.

public abstract int Transceive (byte targetNumber, ReadOnlySpan<byte> dataToSend, Span<byte> dataFromCard, Iot.Device.Card.NfcProtocol protocol);

abstract member Transceive : byte * ReadOnlySpan<byte> * Span<byte> * Iot.Device.Card.NfcProtocol -> int

Public MustOverride Function Transceive (targetNumber As Byte, dataToSend As ReadOnlySpan(Of Byte), dataFromCard As Span(Of Byte), protocol As NfcProtocol) As Integer

Parameters

targetNumber

Byte

Some readers have a notion of target number for the cards as they can read multiple ones

dataToSend

ReadOnlySpan<Byte>

A standardized raw buffer with the command at the position 0 in the array

dataFromCard

Span<Byte>

If any data are read from the card, they will be put into this array

protocol

NfcProtocol

NFC protocol for this data exchange (e.g., Mifare)

Returns

Int32

-1 in case of error, otherwise the number of bytes read and copied into the dataFromCard array